UK election: Britain goes to polls in heated contest

Voting is under way in the UK for the country's second general election in little over two years after one one of the most tumultuous campaigns in recent decades.

A majority of voters on Thursday are expected to choose between Prime Minister Theresa May's Conservative Party and Jeremy Corbyn's opposition Labour Party.

Other choices on offer for the 45.7 million eligible voters include the Liberal Democrat Party, which wants to reverse a process for Britain to leave the European Union, or Brexit, and nationalist parties in Scotland and Wales.

Polls close at 10pm local time (21:00 GMT). Counting will take place overnight, and results are expected in the early hours of Friday.

When the election was first called for by May, in April, many observers thought Brexit would dominate campaigning - but that has given way to a raft of issues, top of which is security.

At least 30 people were killed and scores more wounded in the past three weeks in two separate attacks claimed by the Islamic State of Iraq and the Levant (ISIL) group.

The attacks in the northern city of Manchester and the capital, London, prompted fierce debate on security and what could have been done to mitigate the ISIL threat.

May arrives with her husband Philip to vote in Berkshire [Toby Melville/Reuters]

Corbyn attacked May's cuts to the police when she was home secretary from 2010 to 2016, while the prime minister hit back with criticism of the Labour leader's record of voting against anti-terror legislation.

"Campaigning had to be suspended twice after the attacks," Al Jazeera's Barbara Serra, reporting from London, said.

"We are expecting to see heightened security in many of the polling stations."

Economy, Brexit

Other issues include the economy, on which the two leading candidates have pledged two radically different visions.

In the polls, the Conservatives started the campaign with a lead of about 25 percent, but Corbyn has whittled it down to between one and 12 percentage points in the final projections before campaigning ended.

The large disparity in the polls has been put down to the methodology used - particularly estimates of how many young people will turn up to vote.